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Dell PowerVault ME4 Series Storage System Administrator’s Guide

Initiating or scheduling a replication from the Volumes topic

After you have created a replication set, you can copy the selected volume or volume group on the primary system to the secondary system by initiating replication. The first time that you initiate replication, a full copy of the allocated pages for the volume or volume group is made to the secondary system. Thereafter, the primary system only sends the contents that have changed since the last replication.

You can manually initiate replication or create a scheduled task to initiate it automatically from both the Replications and Volumes topics. You can initiate replications only from a replication set's primary system. For information on modifying or deleting a replication schedule, see Managing replication schedules from the Volumes topic.

NOTE:If you change the time zone of the secondary system in a replication set whose primary and secondary systems are in different time zones, you must restart the system to enable management interfaces to show proper time values for replication operations.

If a replication fails, the system suspends the replication set. The replication operation will attempt to resume if it has been more than 10 minutes since the replication set was suspended. If the operation has not succeeded after six attempts using the 10-minute interval, it will switch to trying to resume if it has been over an hour and the peer connection is healthy.

NOTE:Host port evaluation is done at the start or resumption of each replication operation. At most, two ports will be used. Ports with optimized paths will be used first. Ports with unoptimized paths will be used if no optimized path exists. If only one port has an optimized path, then only that port will be used. The replication will not use another available port until all currently used ports become unavailable.
NOTE:If a single host port loses connectivity, event 112 will be logged. Because a peer connection is likely to be associated with multiple host ports, the loss of a single host port may degrade performance but usually will not cause the peer connection to be inaccessible.

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